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Minor changes in blood lipids after 6 weeks of high-volume low- intensity physical activity with strict energy balance control.
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Public Health and Caring Sciences. Department of Medical Sciences. Klinisk kemi. (Stridsberg)
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Public Health and Caring Sciences. klinisk nutrition och metabolism. (Cederholm)
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Public Health and Caring Sciences. Department of Women's and Children's Health. Klinisk nutrition och metabolism. (Cederholm)
Uppsala University, Medicinska vetenskapsområdet, Faculty of Medicine, Department of Public Health and Caring Sciences. Klinisk nutrition och metabolism. (Cederholm)
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2006 (English)In: Eur J Appl Physiol, ISSN 1439-6319, Vol. 96, no 3, 1-7 p.Article in journal (Refereed) Published
Abstract [en]

Physical activity has been shown to favorably affect metabolic risk markers, including blood lipids. The impact of high-energy turnover, without influencing the traditionally used markers of exercise training effects, on blood lipids is still unclear. The aim was to study the effect of high-volume low-intensity physical activity on the blood lipid pattern, with a tight control of diet and energy balance. Eight untrained men [42.5 (12.1) years, body mass index 24.2 (2.8) kg m(-2)] were tested in two different 6-week protocols. In the sedentary protocol, the subjects were instructed to limit their everyday physical activity. In the activity protocol, a 2-h physical activity bout was performed 5 days week(-1) (~40% of VO(2max); equivalent of an additional 21 MJ week(-1) in energy expenditure). The diet for both protocols comprised ~40 energy percent (E%) fat, ~50 E% carbohydrates (CHO). The polyunsaturated fatty acids to saturated fatty acids ratio of the diet was ~0.12. There were no changes during each 6-week period or differences between the two protocols in body weight, body composition or aerobic capacity. Low-intensity physical activity did not affect lipid parameters substantially, except for a slightly lower Apo-B/Apo-A1 ratio with the activity protocol (P<0.05). Total and low-density lipoprotein cholesterol, as well as Apo-B and Apo-A1, were increased during the beginning of each 6-week period (P<0.05), but returned to basal levels by the sixth week. In conclusion, 6 weeks of high-volume low-intensity physical activity did not affect blood lipids substantially.

Place, publisher, year, edition, pages
2006. Vol. 96, no 3, 1-7 p.
Keyword [en]
Anthropometry, Body Composition, Cross-Over Studies, Energy Intake, Exercise, Humans, Lipids/*blood, Lipoproteins/*blood, Male, Oxygen Consumption, Triglycerides/*blood
Identifiers
URN: urn:nbn:se:uu:diva-75446PubMedID: 16344937OAI: oai:DiVA.org:uu-75446DiVA: diva2:103357
Available from: 2008-06-25 Created: 2008-06-25 Last updated: 2011-01-11

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Branth, StefanSjödin, AndersHolmbäck, Ulf

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